If your hives are in an exposed position and always separating or blowing over in blustery weather then these supports are for you. Sold in sets of 4 (screws not included) these are fixed at every top corner of component parts and grip the box above by 15mm. Designed such that screws fix the support to the top of the hive part while tacks can be used to fix the adjoining part for a more permanent fitting especially if moving hives.